netdev - Re: [PATCH iproute2] lib/libnetlink: ensure a minimum of 32KB for the buffer used in rtnl

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Message-ID: <a34a8392-9c9a-7ce6-1289-ec3a0b6e2e0d@gmail.com>
Date: Sun, 4 Jun 2023 10:03:45 -0600
From: David Ahern <dsahern@...il.com>
To: Gal Pressman <gal@...dia.com>,
 Stephen Hemminger <stephen@...workplumber.org>
Cc: Eric Dumazet <edumazet@...gle.com>, netdev <netdev@...r.kernel.org>,
 Eric Dumazet <eric.dumazet@...il.com>, Hangbin Liu <liuhangbin@...il.com>,
 Phil Sutter <phil@....cc>, Jakub Kicinski <kuba@...nel.org>,
 Michal Kubecek <mkubecek@...e.cz>
Subject: Re: [PATCH iproute2] lib/libnetlink: ensure a minimum of 32KB for the
 buffer used in rtnl_recvmsg()

On 6/4/23 7:33 AM, Gal Pressman wrote:
>> It is possible to dump millions of routes, so it is not directly a netlink
>> issue more that the current API is slamming all the VF's as info blocks
>> under a single message response.
>>
>> That would mean replacing IFLA_VFINFO_LIST with a separate query
> 
> Thanks Stephen!
> How would you imagine it? Changing the userspace to split each (PF, VF)
> to a separate netlink call instead of a single call for each PF?


This is the last attempt that I recall to address this issue:

https://lore.kernel.org/netdev/20210123045321.2797360-1-edwin.peer@broadcom.com/